CN215213459U - Sand control pipe for petroleum underground operation device - Google Patents
Sand control pipe for petroleum underground operation device Download PDFInfo
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- CN215213459U CN215213459U CN202121414006.5U CN202121414006U CN215213459U CN 215213459 U CN215213459 U CN 215213459U CN 202121414006 U CN202121414006 U CN 202121414006U CN 215213459 U CN215213459 U CN 215213459U
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- sieve tube
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Abstract
The utility model relates to a sand control pipe for an oil underground operation device, which comprises an inner sieve pipe, an outer sieve pipe coaxially sleeved on the outer periphery of the inner sieve pipe, and a coupling seat positioned at the upper end part and the lower end part of the inner sieve pipe and the outer sieve pipe; wherein a gap is formed between the inner sieve tube and the outer sieve tube, and the upper end part and the lower end part of the inner sieve tube and the outer sieve tube are respectively provided with a hoop connecting seat; the outer peripheral wall of the inner sieve tube is uniformly provided with inner sieve slits at intervals, and the outer peripheral wall of the outer sieve tube is uniformly provided with outer sieve slits at intervals; the opening direction of the inner screen slot is the secant direction of the section of the inner screen tube, and the opening direction of the outer screen slot and the opening direction of the inner screen slot form an acute angle at the same horizontal height. The utility model discloses the fine gravel that avoids crude oil to carry blocks up interior screen joint and outer screen joint, guarantees that crude oil bores to take out and carries stably.
Description
Technical Field
The utility model relates to a technical field is adopted to the oil drilling in the pit, especially relates to a sand control pipe is used to oil borehole operation device.
Background
The conventional oil downhole operation needs to use a sand control pipe, wherein a slotted screen pipe is commonly used as a sand control tool, the slot shape of the slotted screen pipe is a rectangular slot, and meanwhile, the extending direction of the rectangular slot is located in the radial direction of the slotted screen pipe, namely, the flowing direction of the crude oil linearly enters the inside of the slotted screen pipe, so that gravel is blocked in the rectangular slot, and the oil extraction efficiency and the service life of the screen pipe are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a petroleum is sand control pipe for borehole operation device solves the easy stifled sand of conventional sand control pipe and causes the problem that reduces the life of oil recovery efficiency and screen pipe.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a sand control pipe for an oil downhole operation device, which comprises an inner sieve pipe, an outer sieve pipe coaxially sleeved on the outer periphery of the inner sieve pipe, and coupling seats positioned at the upper and lower end parts of the inner sieve pipe and the outer sieve pipe;
wherein a gap is formed between the inner sieve tube and the outer sieve tube, and the upper end part and the lower end part of the inner sieve tube and the outer sieve tube are respectively provided with a hoop connecting seat;
inner screen slots are uniformly arranged on the outer peripheral wall of the inner screen pipe at intervals, and outer screen slots are uniformly arranged on the outer peripheral wall of the outer screen pipe at intervals;
the opening direction of the inner screen slot is the secant direction of the section of the inner screen slot, and the opening direction of the outer screen slot and the opening direction of the inner screen slot form an acute angle on the same horizontal height.
In this embodiment, it is further preferable that the inner screen pipe and the outer screen pipe are coaxial and equal in length, wherein in this embodiment, the inner screen pipe and the outer screen pipe may also be designed to have unequal length structures, and in order to stabilize the end face structure, the coupling seat may specifically be designed to have a structure with a pre-groove, so as to ensure stability of the overall structure.
In this embodiment, it is still further preferable that the coupling seats are fixedly installed at both ends of the inner screen and the outer screen.
In this embodiment, it is still further preferable that a connecting thread is formed in the coupling seat for connecting the conveying pipe.
In this embodiment, it is still further preferable that the wall thickness of the inner screen pipe is greater than that of the outer screen pipe, and the inner screen pipe serves as a support pipe, so that the overall structural strength is improved.
In this embodiment, it is still further preferable that the crude oil is rotated into the gap between the inner screen pipe and the outer screen pipe through the outer screen slits and then enters the inner screen pipe through the inner screen slits.
In this embodiment, it is still further preferred that the inner screen slots and the outer screen slots are both parallel to the central axis of the inner screen.
Compared with the prior art, the utility model discloses a beneficial technological effect: utilize outer screen cut in this application to make and enter into interior screen pipe with the crude oil anticlockwise inflow in the reservation clearance between the outer screen pipe, and get into the inside crude oil of interior screen pipe makes its clockwise entering through the interior screen cut that the secant direction was seted up, because crude oil is at the flow in-process, has appeared anticlockwise and clockwise flow successively, thereby interior screen pipe with form the vortex between the outer screen pipe to avoid the tiny gravel that crude oil carried to block up interior screen cut and outer screen cut, guarantee that crude oil bores to take out to carry stably.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a schematic view of the main body of the sand control pipe for the oil well operation device of the present invention;
FIG. 2 is a schematic top view of the sand control pipe for the oil well working device of the present invention;
fig. 3 is the local enlarged schematic view of the sand control pipe for the oil downhole operation device.
Description of reference numerals:
1. a hoop connecting seat;
2. an inner sieve tube; 2a, inner screen gaps;
3. an outer screen pipe; 3a and an outer screen slot.
Detailed Description
As shown in fig. 1, the embodiment discloses a sand control pipe for an oil downhole operation device, which comprises an inner screen pipe 2, an outer screen pipe 3 coaxially sleeved on the outer peripheral side of the inner screen pipe 2, and a coupling seat 1 positioned at the upper and lower end parts of the inner screen pipe 2 and the outer screen pipe 3; wherein a gap exists between the inner screen pipe 2 and the outer screen pipe 3, and the upper end and the lower end of the inner screen pipe 2 and the outer screen pipe 3 are respectively provided with a hoop seat 1; the outer peripheral wall of the inner sieve tube 2 is uniformly provided with inner sieve slits 2a at intervals, and the outer peripheral wall of the outer sieve tube 3 is uniformly provided with outer sieve slits 3a at intervals; the inner screen slot 2a and the outer screen slot 3a are both separating slots;
in this embodiment, the inner screen pipe 2 and the outer screen pipe 3 are coaxial and equal in length, and the collar base 1 is fixedly installed at two end portions of the inner screen pipe 2 and the outer screen pipe 3; and a connecting thread is arranged in the joint hoop seat 1, wherein the connecting thread is used for facilitating the installation of a pipeline for conveying crude oil.
As shown in fig. 2, the opening direction of the inner screen slot 2a is a secant direction of a cross section of the inner screen tube 2, and on the same horizontal height, the opening direction of the outer screen slot 3a forms an acute angle with the opening direction of the inner screen slot 2 a; the wall thickness of the inner sieve tube 2 is larger than that of the outer sieve tube 3, and the inner sieve tube 2 is used as a supporting tube; crude oil enters a gap between the inner sieve tube 2 and the outer sieve tube 3 through the outer sieve slot 3a in a rotating mode and then enters the inner sieve tube 2 through the inner sieve slot 2 a; the inner screen slot 2a and the outer screen slot 3a are parallel to the central axis of the inner screen pipe 2;
in this embodiment, as shown in fig. 2, it is a sectional top view of the inner screen 2 and the outer screen 3, wherein the extending direction of the inner screen slots 2a formed on the side wall of the inner screen 2 is a cut line of a sectional circle of the inner screen 2, and the extending direction of the outer screen 3 formed on the side wall of the outer screen 3 is also a cut line of a sectional circle of the outer screen 3; in this embodiment, the opening direction of the outer screen slot 3a is perpendicular to the opening direction of the inner screen slot 2a at a right angle, so that crude oil enters the reserved gap between the inner screen tube 2 and the outer screen tube 3 through the outer screen slot 3a, and the crude oil entering the reserved gap between the inner screen tube 2 and the outer screen tube 3 flows counterclockwise because the outer screen slot 3a is symmetrically formed about the center axis of the outer screen tube 3;
in addition, because the extending direction of the inner screen slots 2a formed on the inner screen 2 deviates from the central axis of the inner screen 2, and the inner screen slots 2a are formed symmetrically with respect to the central axis of the inner screen 2, the crude oil entering the reserved gap between the inner screen 2 and the outer screen 3 flows clockwise and enters the inner screen 2 for transportation;
in this embodiment, the outer screen slot 3a is used to allow crude oil entering the gap between the inner screen pipe 2 and the outer screen pipe 3 to flow in counterclockwise, and crude oil entering the inner screen pipe 2 enters clockwise through the inner screen slot 2a, and since the crude oil flows counterclockwise and clockwise in sequence during the flowing process, turbulent flow is formed between the inner screen pipe 2 and the outer screen pipe 3, so that fine gravel carried by the crude oil is prevented from blocking the inner screen slot 2a and the outer screen slot 3a, and the stability of crude oil drilling and pumping is ensured.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above embodiments are only for describing the preferred mode of the invention, and are not intended to limit the scope of the invention, and various modifications and improvements made to the technical solution of the invention by those skilled in the art without departing from the spirit of the invention should fall within the protection scope defined by the claims of the invention.
Claims (7)
1. The utility model provides a sand control pipe for oil borehole operation device which characterized in that: the sieve tube comprises an inner sieve tube, an outer sieve tube coaxially sleeved on the outer peripheral side of the inner sieve tube, and coupling seats positioned at the upper and lower end parts of the inner sieve tube and the outer sieve tube;
wherein a gap is formed between the inner sieve tube and the outer sieve tube, and the upper end part and the lower end part of the inner sieve tube and the outer sieve tube are respectively provided with a hoop connecting seat;
inner screen slots are uniformly arranged on the outer peripheral wall of the inner screen pipe at intervals, and outer screen slots are uniformly arranged on the outer peripheral wall of the outer screen pipe at intervals;
the opening direction of the inner screen slot is the secant direction of the section of the inner screen slot, and the opening direction of the outer screen slot and the opening direction of the inner screen slot form an acute angle on the same horizontal height.
2. The sand control pipe for an oil downhole operation device according to claim 1, characterized in that: the inner sieve tube and the outer sieve tube are coaxial and have equal length.
3. The sand control pipe for an oil downhole operation device according to claim 2, characterized in that: the joint hoop seats are fixedly arranged at two ends of the inner sieve tube and the outer sieve tube.
4. The sand control pipe for an oil downhole operation device according to claim 1, characterized in that: and a connecting thread is arranged in the coupling seat.
5. The sand control pipe for an oil downhole operation device according to claim 1, characterized in that: the wall thickness of the inner sieve tube is larger than that of the outer sieve tube, and the inner sieve tube serves as a supporting tube.
6. The sand control pipe for an oil downhole operation device according to claim 1, characterized in that: and crude oil enters a gap between the inner sieve tube and the outer sieve tube through the rotation of the outer sieve slot and then enters the inner sieve tube through the inner sieve slot.
7. The sand control pipe for an oil downhole operation device according to claim 1, characterized in that: the inner screen slot and the outer screen slot are both parallel to the central axis of the inner screen pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121414006.5U CN215213459U (en) | 2021-06-24 | 2021-06-24 | Sand control pipe for petroleum underground operation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121414006.5U CN215213459U (en) | 2021-06-24 | 2021-06-24 | Sand control pipe for petroleum underground operation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213459U true CN215213459U (en) | 2021-12-17 |
Family
ID=79435139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121414006.5U Active CN215213459U (en) | 2021-06-24 | 2021-06-24 | Sand control pipe for petroleum underground operation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213459U (en) |
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2021
- 2021-06-24 CN CN202121414006.5U patent/CN215213459U/en active Active
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